Away from city
lights from 4th December, 2017
to 17th December, 2017 people can witness annual celestial
spectacle of Geminids Meteor Showers (ఉల్కాపాతం/الکا شاور / उल्कापात) from
pollution free dark clear skies. #geminid
As per the International Meteor Organization (IMO)
this meteor shower peak is expected on the night of 13th/14th
December 2017 with maximum of up to
120 Meteors per hour to be visible from clear dark skies. In 2016 Due to
Moon meteors were outshined by Moonshine hence was not appreciated. Whereas
2017 in spite presence of Crescent Moon will not mar the event.
Why/How Locate Gemini – What you will see? – the Twins (Pattern of Stars)? Why Wait till 9pm? 3 hours after Sunset from 10pm onwards looking between North East and East Direction one can locate Gemini Constellation (two bright Stars parallel to each other – in the pattern of Stars appearing/known since ages as Twins).
It would seem as if these bright streaks of light are emanating near from star called Castor in Gemini constellation where the radiant of this meteor shower lies. Telescopes/Binoculars are not required to see Meteor Showers.
How
many meteors can be seen in an Hour? Depending on observer’s location and
skies above, many tens of meteors per hour will be visible with highest rates
reaching up to a max of 120 ZHR (Meteors
per Hour) on 13th/14th December, 2017.
Directions
– Time – Evening, Midnight & Morning – till 17th Dec – Best Time
to See: People can observe this meteor shower by
looking North East and East Direction
from 10.00 p.m. onwards, while they
are visible near to mid of sky by
the time it is Midnight whereas early
Morning walkers can see meteors in
the western sky in the morning before Sunrise. However 2 a.m. in the Night is best time to observe the meteors.
Parent Body (3200 Phaethon)of the Meteor Shower – to pass by earth on
16 Dec 2017 : Source of
Geminid Meteor Shower particles Asteroid named “3200 Phaethon” moving at speed of 31 Km/Sec will pass by
earth at distance of 0.068 A.U.
(i.e.1,01,72,655 km) on 16 Dec 2017.
The next time it will pass by earth is in year 2026 Oct 7 at 0.36 a.u.( 5,38,55,233 km). In spite
of its close pass by this object is not expected to hit Earth anywhere in distant .
More Details :
Geminids
Meteor Shower: A meteor is a shooting star (layman’s
Language), space dust/debris about the size of a grain of sand or more. The
dust hits the earth’s atmosphere and burns up into a blaze of light. When
greater number of meteors are visible on regular scale (mostly annually) in one
part of sky due to a parent body then it’s referred as Meteor Shower.
Where
does space dust come from? Comets and asteroids pass through our
solar system. During such pass comets/asteroids leave their debris i.e. clouds
of Dust particles behind them. When
earth crosses through these dust clouds specks of particles hit Earth's atmosphere at greater velocity and disintegrate
into a bright flash of lights — meteors!
Specialty
of Geminids Meteor Shower: The Geminids are one of the most popular
annual meteor showers occurring visible from India apart from more than dozen
such meteor showers. While most meteor showers come from comets, Geminids has a
its origin from an Asteroid—a near-Earth object named 3200 Phaethon. Asteroids
don't normally spew dust/particles like comets into space. However it is
believed 3200 Phaethon its once
extinct comet. Presently most of the experts call it “Rock Comet”.
Asteroid 3200 Phaethon the parent body of Geminids
Meteor showers is Potentially Hazardous
Asteroid (PHA) : As of now Earth is passing through a stream of
debris from extinct comet now Asteroid 3200
Phaethon, which is source of the annual Geminids meteor shower. On 10th
December, 2007 it flew past Earth at a
distance of about 0.12(1,79,51,744
km) away. In its next closest approach it passed by 0.4 A.U.(
5,98,39,148 km ) on 29th
September 2016.
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